Reverse Osmosis Systems
Reverse osmosis (RO) forces water through a semi-permeable membrane at multiple stages, removing dissolved solids, chlorine, fluoride, heavy metals and limescale-causing minerals. The result is some of the purest drinking water available from an under-sink system. All our RO units fit discreetly under the kitchen sink and include everything needed for installation.
Torn between the three? Compare the RO-300, RO-400 and RO-500 side by side on output, footprint, waste water and running costs.
Reverse OsmosisClarisink RO-400 Reverse Osmosis System
£199.00
VAT included
Reverse OsmosisClarisink RO-500 Tankless Reverse Osmosis System
£249.00
VAT included
Reverse OsmosisClarisink RO-300 Compact Reverse Osmosis System
£179.00
VAT included
Is reverse osmosis right for your kitchen?
RO is the most thorough option for hard-water regions: the membrane rejects dissolved solids that carbon filtration passes straight through, including much of the calcium and magnesium behind limescale. The trade-off is a larger under-sink footprint, a slower fill rate and a small amount of waste water.
If your main complaint is chlorine taste rather than scale, a carbon system is cheaper to buy and to run. Our RO vs carbon comparison sets out both, and the hard water area map shows which applies where you live.